Calsoft Senior Developer Interview Questions and Answers

Q1. React theory questions, and 1 problem
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Q2. React and web theory questions on lifecycle methods
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Q1. General family background
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Q2. CTC discussion for current and expected
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Q1. Opps, solid principle, agile methodology, database query, mvc framework, design pattern
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Q1. Java 8 question about Strings.
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Q1. Diff between JDK,JVM,JRE. Equals and HashCode
Ans. 
JDK is a development kit, JRE is a runtime environment, and JVM is a virtual machine. Equals compares object values, HashCode returns a unique integer for an object.
• JDK includes JRE and development tools, while JRE includes JVM and necessary libraries

• JVM is responsible for executing Java bytecode

• Equals method compares the values of two objects, while == compares their references

• HashCode method returns a unique integer ...read more
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Q1. Given 2 Nodes 1->9 ->0 1->0 Add both of them so resulting node would be 2->0->0 190 +10 = 200 Java 8 questions
Ans. 
Add two linked lists representing numbers and return the resulting linked list.
• Traverse both linked lists and add the corresponding digits, keeping track of carry.

• Create a new node for each digit and update the carry for the next iteration.

• If one list is longer than the other, add the remaining digits to the result.

• Handle the case where the carry is not zero after all digits have been added.

• Time complexity: O(max(m,n))...read more
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Q1. Salary Expectations about the job
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I expect a competitive salary based on my experience, skills, and the responsibilities of the role.
• I have extensive experience in senior developer roles and have consistently delivered high-quality work.

• I have a strong understanding of various programming languages and frameworks.

• I have successfully led and mentored teams in previous positions.

• I am confident in my ability to contribute to the success of the company.

• I a...read more
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Q1. Basic core java questions, spring boot and spring mvc questions and other project related questions
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Q1. Project related questions and infrastructure of application
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Q1. Salary negotiation, company policy explanation
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Q1. Some basic questions on sfmc
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Q1. Some questions about previous experience and some technical questions.
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Online zoom coding test will be there - 4 questions - 2 about output of code & 2 about technical questions.

Q1. Polymorphism and explain about virtual polymorphism
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• Virtual polymorphism is achieved through virtual functions in C++.

• Virtual functions allow a function in a base class to be overridden in a derived class.

• Example: Animal class with virtual function 'makeSound' overridden in Dog a
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Q2. Write code for virtual polymorphism and explain
Ans. 
Virtual polymorphism allows objects of different classes to be treated as objects of a common superclass.
• Create a base class with virtual functions

• Create derived classes that override the virtual functions

• Use pointers or references of the base class to call the overridden functions
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Q1. About yourself should explain
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Q2. Reason for job change
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Q3. Salary negotiations and location
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QUANT, MATHS, HTML, CSS

DSA WAS ASKED TOGETHER WITH SOME CORE SUBJECT QUESTIONS.

DSA WAS ASKED TOGETHER WITH SOME PUZZLES.

Q1. BASIC COMMON HR QUES
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Q2. BASIC COMMON HR QUES
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Hackearth online coding test for 1 hour

Q1. Dsa question and output questions
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Q2. Find k largest element in an array
Ans. 
Use sorting or heap data structure to find k largest elements in an array of strings.
• Sort the array in descending order and return the first k elements.

• Use a max heap data structure to efficiently find the k largest elements.

• Examples: ['apple', 'banana', 'orange', 'kiwi'], k=2 -> ['orange', 'kiwi']
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Q1. Remove duplicates from array
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Remove duplicates from array of strings
• Create a Set to store unique strings

• Iterate through the array and add each string to the Set

• Convert the Set back to an array to get the unique strings
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Q2. Output related questions on student class object
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